<?php
/**
 * @Author: Wang chunsheng  email:2192138785@qq.com
 * @Date:   2020-05-25 16:58:19
 * @Last Modified by:   Wang chunsheng  email:2192138785@qq.com
 * @Last Modified time: 2022-10-28 12:06:39
 */

namespace common\components\ueditor;

use Yii;
use yii\base\Action;
use yii\helpers\ArrayHelper;
use yii\web\Response;

class UEditorAction extends Action
{
    /**
     * @var array
     */
    public $config = [];

    public $action = '';

    public function init()
    {
        //close csrf
        Yii::$app->request->enableCsrfValidation = false;
        //默认设置
        $_config = require __DIR__.'/config.php';
        //添加图片默认root路径；
        $_config['imageRoot'] = Yii::getAlias('@webroot');
        $_config['scrawlRoot'] = Yii::getAlias('@webroot');
        $_config['videoRoot'] = Yii::getAlias('@webroot');
        $_config['fileRoot'] = Yii::getAlias('@webroot');
        //load config file
        $this->config = ArrayHelper::merge($_config, $this->config);
        $this->action = Yii::$app->request->get('action');
        parent::init();
    }

    public function run()
    {
        // if (Yii::$app->request->get('callback', false)) {
        //     Yii::$app->response->format = Response::FORMAT_JSONP;
        // } else {
        //     Yii::$app->response->format = Response::FORMAT_JSON;
        // }
        Yii::$app->response->format = Response::FORMAT_JSON;

        return $this->handleAction();
    }

    /**
     * 处理action.
     */
    protected function handleAction()
    {
        $action = $this->action;

        switch ($action) {
            case 'config':
                $result = $this->config;
                break;

            /* 上传图片 */
            case 'uploadimage':
                /* 上传涂鸦 */
            case 'uploadscrawl':
                /* 上传视频 */
            case 'uploadvideo':
                /* 上传文件 */
            case 'uploadfile':
                $result = $this->actionUpload();
                //处理返回的URL
                if (substr($result['url'], 0, 1) != '/') {
                    $result['url'] = '/'.$result['url'];
                }
                $result['url'] = Yii::getAlias('@web'.$result['url']);
                break;
            /* 列出图片 */
            case 'listimage':
                /* 列出文件 */
            case 'listfile':
                $result = $this->actionList();
                break;

            /* 抓取远程文件 */
            case 'catchimage':
                $result = $this->actionCrawler();
                break;

            default:
                $result = [
                    'state' => '请求地址出错',
                ];
                break;
        }
        /* 输出结果 */

        return  $result;
    }

    /**
     * 上传.
     *
     * @return array
     */
    protected function actionUpload()
    {
        $base64 = 'upload';
        switch (htmlspecialchars($_GET['action'])) {
            case 'uploadimage':
                $config = [
                    'pathRoot' => ArrayHelper::getValue($this->config, 'imageRoot', $_SERVER['DOCUMENT_ROOT']),
                    'pathFormat' => $this->config['imagePathFormat'],
                    'maxSize' => $this->config['imageMaxSize'],
                    'allowFiles' => $this->config['imageAllowFiles'],
                ];
                $fieldName = $this->config['imageFieldName'];
                break;
            case 'uploadscrawl':
                $config = [
                    'pathRoot' => ArrayHelper::getValue($this->config, 'scrawlRoot', $_SERVER['DOCUMENT_ROOT']),
                    'pathFormat' => $this->config['scrawlPathFormat'],
                    'maxSize' => $this->config['scrawlMaxSize'],
                    'allowFiles' => $this->config['scrawlAllowFiles'],
                    'oriName' => 'scrawl.png',
                ];
                $fieldName = $this->config['scrawlFieldName'];
                $base64 = 'base64';
                break;
            case 'uploadvideo':
                $config = [
                    'pathRoot' => ArrayHelper::getValue($this->config, 'videoRoot', $_SERVER['DOCUMENT_ROOT']),
                    'pathFormat' => $this->config['videoPathFormat'],
                    'maxSize' => $this->config['videoMaxSize'],
                    'allowFiles' => $this->config['videoAllowFiles'],
                ];
                $fieldName = $this->config['videoFieldName'];
                break;
            case 'uploadfile':
            default:
                $config = [
                    'pathRoot' => ArrayHelper::getValue($this->config, 'fileRoot', $_SERVER['DOCUMENT_ROOT']),
                    'pathFormat' => $this->config['filePathFormat'],
                    'maxSize' => $this->config['fileMaxSize'],
                    'allowFiles' => $this->config['fileAllowFiles'],
                ];
                $fieldName = $this->config['fileFieldName'];
                break;
        }
        /* 生成上传实例对象并完成上传 */

        $up = new Uploader($fieldName, $config, $base64);
        /*
         * 得到上传文件所对应的各个参数,数组结构
         * array(
         *     "state" => "",          //上传状态，上传成功时必须返回"SUCCESS"
         *     "url" => "",            //返回的地址
         *     "title" => "",          //新文件名
         *     "original" => "",       //原始文件名
         *     "type" => ""            //文件类型
         *     "size" => "",           //文件大小
         * )
         */

        /* 返回数据 */
        return $up->getFileInfo();
    }

    /**
     * 获取已上传的文件列表.
     *
     * @return array
     */
    protected function actionList()
    {
        /* 判断类型 */
        switch ($_GET['action']) {
            /* 列出文件 */
            case 'listfile':
                $allowFiles = $this->config['fileManagerAllowFiles'];
                $listSize = $this->config['fileManagerListSize'];
                $path = $this->config['fileManagerListPath'];
                break;
            /* 列出图片 */
            case 'listimage':
            default:
                $allowFiles = $this->config['imageManagerAllowFiles'];
                $listSize = $this->config['imageManagerListSize'];
                $path = $this->config['imageManagerListPath'];
        }
        $allowFiles = substr(str_replace('.', '|', join('', $allowFiles)), 1);

        /* 获取参数 */
        $size = isset($_GET['size']) ? htmlspecialchars($_GET['size']) : $listSize;
        $start = isset($_GET['start']) ? htmlspecialchars($_GET['start']) : 0;
        $end = (int) $start + (int) $size;

        /* 获取文件列表 */
        $path = $_SERVER['DOCUMENT_ROOT'].(substr($path, 0, 1) == '/' ? '' : '/').$path;
        $files = $this->getfiles($path, $allowFiles);
        if (!count($files)) {
            return [
                'state' => 'no match file',
                'list' => [],
                'start' => $start,
                'total' => count($files),
            ];
        }

        /* 获取指定范围的列表 */
        $len = count($files);
        for ($i = min($end, $len) - 1, $list = []; $i < $len && $i >= 0 && $i >= $start; --$i) {
            $list[] = $files[$i];
        }
        //倒序
        //for ($i = $end, $list = array(); $i < $len && $i < $end; $i++){
//    $list[] = $files[$i];
        //}

        /* 返回数据 */
        return [
            'state' => 'SUCCESS',
            'list' => $list,
            'start' => $start,
            'total' => count($files),
        ];
    }

    /**
     * 抓取远程图片.
     *
     * @return array
     */
    protected function actionCrawler()
    {
        /* 上传配置 */
        $config = [
            'pathFormat' => $this->config['catcherPathFormat'],
            'maxSize' => $this->config['catcherMaxSize'],
            'allowFiles' => $this->config['catcherAllowFiles'],
            'oriName' => 'remote.png',
        ];
        $fieldName = $this->config['catcherFieldName'];

        /* 抓取远程图片 */
        $list = [];
        if (isset($_POST[$fieldName])) {
            $source = $_POST[$fieldName];
        } else {
            $source = $_GET[$fieldName];
        }
        foreach ($source as $imgUrl) {
            $item = new Uploader($imgUrl, $config, 'remote');
            $info = $item->getFileInfo();
            array_push($list, [
                'state' => $info['state'],
                'url' => $info['url'],
                'size' => $info['size'],
                'title' => htmlspecialchars($info['title']),
                'original' => htmlspecialchars($info['original']),
                'source' => htmlspecialchars($imgUrl),
            ]);
        }

        /* 返回抓取数据 */
        return [
            'state' => count($list) ? 'SUCCESS' : 'ERROR',
            'list' => $list,
        ];
    }

    /**
     * 遍历获取目录下的指定类型的文件.
     *
     * @param $path
     * @param $allowFiles
     * @param array $files
     *
     * @return array|null
     */
    protected function getfiles($path, $allowFiles, &$files = [])
    {
        if (!is_dir($path)) {
            return null;
        }
        if (substr($path, strlen($path) - 1) != '/') {
            $path .= '/';
        }
        $handle = opendir($path);
        while (false !== ($file = readdir($handle))) {
            if ($file != '.' && $file != '..') {
                $path2 = $path.$file;
                if (is_dir($path2)) {
                    $this->getfiles($path2, $allowFiles, $files);
                } else {
                    if (preg_match("/\.(".$allowFiles.')$/i', $file)) {
                        $files[] = [
                            'url' => substr($path2, strlen($_SERVER['DOCUMENT_ROOT'])),
                            'mtime' => filemtime($path2),
                        ];
                    }
                }
            }
        }

        return $files;
    }
}
